One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(7,8)(11,15)(13,16)(20,27)(24,29)(25,31)(30,32)(33,34,37,40)(35,38,41,44)(36,39,43,46)(42,45,47,48)(1,2)(3,8)(4,7)(5,6)(9,10,12,14)(11,13,15,16)(18,22)(23,28)(24,29)(30,32)(35,41)(38,44)(42,47)(45,48)(1,3,5,4)(2,7,6,8)(17,18)(19,23)(20,24)(21,22)(25,30)(26,28)(27,29)(31,32)(33,34)(35,38)(36,39)(37,40)(41,44)(42,45)(43,46)(47,48)(1,4,5,3)(2,7,6,8)(9,11)(10,13)(12,15)(14,16)(17,19,21,26)(18,23,22,28)(20,25,27,31)(24,30,29,32)(33,35)(34,38)(36,42)(37,41)(39,45)(40,44)(43,47)(46,48)(1,2)(3,7)(4,8)(5,6)(17,20)(18,24)(19,25)(21,27)(22,29)(23,30)(26,31)(28,32)(33,36,37,43)(34,39,40,46)(35,42,41,47)(38,45,44,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.